Sectional perspective (1964) - an invisible city, between walls, on either side of a wide valley; Universal City, project, Sectional perspective (1966); Earth-Cloud House, project (1970); and The House with Curtains Project, Perspective (1972), about which Abraham notes, in the accompanying poem entitled "Elements of the House," the opposing sensations and feelings, natural elements and cycles, and spatial components characterizing his subject,The House without Rooms, project, elevation and plan (1974). Abraham's drawn architecture explores human dwellings, the ritual of habitation, and the subjectivity of spatial conditions, especially interiority. Abraham's shadowy visions, such as Radar Cities, Terza Mostra d' Architettura, (1985); Jewish Museum Project, Judenplatz, Vienna, Austria Project, Exterior perspective (1997); and Metropolitan Core (2010) propose thoughtful architectural prototypes. The work is a prescient meditation on architectural scale, not only its relationship to the scale of the human body, but also the impact of scale upon multi-sensory perception and imagination. Abraham explained the inspiration for Nine Projects for Venice (1979–80): "the absence of the mechanical scale of land-bound transportation, Venice, as no other City, has been able to retain a physiological morphology which has consistently reversed all known spatial principles of Cartesian origins." Abraham populates the city of Venice with architectural inventions, such as Wall of Lost Journeys, House For Boats, Square of Solitude, and Tower of Wisdom. Abraham's drawn architecture is symbolic of the mythology for collisions and the potential of architectural expression. In the collection Reynolda House Museum of American Art, Abraham's Untitled (1982) drawing of a geometric structure set in a hilly landscape; along the edge is composed (from top to bottom) of an isometric view, a side elevation, and cross-section. Architecture education Abraham explained his role as an educator as follows: "Teaching forces me to engage in a critical dialogue with somebody else, and find a level of objectivity that allows me to have a fair critical argument. My role as a teacher is simply to clarify, although that's a bit simplistic. When I give a problem to the students, it's my problem; I am trying to anticipate how I could solve that problem. And my joy is when the students come up with a solution I haven't thought of." After arriving in the United States in the mid-1960s, Abraham taught at Rhode Island School of Design, in Providence, Rhode Island, and then for 31-years, he was a professor of architecture at the Cooper Union School of